PID gas detection sensors are newly improved

Improved Model PI-700 Photoionization gas detection sensor now better manages humidity drift and surface contamination for field reliability and durability, it’s announced.

This “smart” sensor detects and monitors a wide range of volatile organic compounds and toxic gases in air. Its photoionization design is generally preferred to detect VOCs. However humidity can cause the zero baseline to drift. Also, large complex VOC molecules can build up on the sensor lamp filter. This causes surface contamination and span drift.

PI-700 has a secondary filter that helps minimize humidity changes and prevent heavy complex airborne VOC molecules from contacting its PID sensor. Proper use of the secondary filter can extend time between required sensor cleanings and/or replacement, it’s noted.

Model PI-700’s sensors assembly includes a plug-in replaceable miniature PID in an electropolished 316 stainless steel vault. It also comprises a fully encapsulated Intelligent Transmitter Module (ITM) plus sensor splashguard with integral calibration port. These instruments are CSA-USA and ATEX-certified for installation and use in Div. 1/Zone 1 industrial locations.

Detcon Incorporated
3200 Research Forest Drive, A-1, The Woodlands TX 77382

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